Your body isn’t a robot, and your hydration needs aren't either. A marathon runner sweating buckets on a hot day needs way more than someone binge-watching Netflix in an air-conditioned room. Age, activity level, climate, and even your diet all play a huge role. (Yes, that salad you ate counts toward your water intake, weirdly enough.)
The National Academies of Sciences, Engineering, and Medicine suggests about 3.7 liters (125 ounces) for men and 2.7 liters (91 ounces) for women daily. But those numbers include water from food and other beverages. So you’re not exactly sipping from a fire hose—unless you want to, I guess?
